Appendix IV: Entity table
This section compiles the entities (key-value pairs) described throughout this
specification, and establishes a common order within a filename. For example, if
a file has an acquisition and reconstruction label, the acquisition entity must
precede the reconstruction entity. REQUIRED and OPTIONAL entities for a given
file type are denoted. Entity formats indicate whether the value is alphanumeric
(<label>) or numeric (<index>).
A general introduction to entities is given in the section on file name structure
| Entity | Subject | Session | Task | Acquisition | Contrast Enhancing Agent | Reconstruction | Phase-Encoding Direction | Run | Corresponding modality | Echo | Recording | Processed (on device) | Space | Split |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Format | sub-<label> |
ses-<label> |
task-<label> |
acq-<label> |
ce-<label> |
rec-<label> |
dir-<label> |
run-<index> |
mod-<label> |
echo-<index> |
recording-<label> |
proc-<label> |
space-<label> |
split-<index> |
| anat (T1w T2w T1rho T1map T2map T2star FLAIR FLASH PD PDmap PDT2 inplaneT1 inplaneT2 angio) |
REQUIRED | OPTIONAL | OPTIONAL | OPTIONAL | OPTIONAL | |||||||||
| anat (defacemask) |
REQUIRED | OPTIONAL | OPTIONAL | OPTIONAL | OPTIONAL | OPTIONAL | ||||||||
| func (bold cbv phase sbref events) |
REQUIRED | OPTIONAL | REQUIRED | OPTIONAL | OPTIONAL | OPTIONAL | OPTIONAL | OPTIONAL | OPTIONAL | |||||
| func (physio stim) |
REQUIRED | OPTIONAL | REQUIRED | OPTIONAL | OPTIONAL | OPTIONAL | OPTIONAL | OPTIONAL | ||||||
| dwi (dwi bvec bval) |
REQUIRED | OPTIONAL | OPTIONAL | OPTIONAL | OPTIONAL | |||||||||
| fmap (phasediff phase1 phase2 magnitude1 magnitude2 magnitude fieldmap) |
REQUIRED | OPTIONAL | OPTIONAL | OPTIONAL | ||||||||||
| fmap (epi) |
REQUIRED | OPTIONAL | OPTIONAL | OPTIONAL | REQUIRED | OPTIONAL | ||||||||
| beh (events stim physio) |
REQUIRED | OPTIONAL | REQUIRED | |||||||||||
| meg |
REQUIRED | OPTIONAL | REQUIRED | OPTIONAL | OPTIONAL | OPTIONAL | OPTIONAL | |||||||
| eeg |
REQUIRED | OPTIONAL | REQUIRED | OPTIONAL | OPTIONAL | |||||||||
| ieeg |
REQUIRED | OPTIONAL | REQUIRED | OPTIONAL | OPTIONAL | |||||||||
| channels (meg/eeg/ieeg) |
REQUIRED | OPTIONAL | REQUIRED | OPTIONAL | ||||||||||
| headshape (meg) |
REQUIRED | OPTIONAL | OPTIONAL | OPTIONAL | ||||||||||
| markers (meg) |
REQUIRED | OPTIONAL | OPTIONAL | OPTIONAL | OPTIONAL | |||||||||
| photo (meg/eeg/ieeg) |
REQUIRED | OPTIONAL | OPTIONAL | |||||||||||
| electrodes (eeg/ieeg) |
REQUIRED | OPTIONAL | OPTIONAL | OPTIONAL | ||||||||||
| events (meg/eeg/ieeg) |
REQUIRED | OPTIONAL | REQUIRED | OPTIONAL |